From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934544Ab0EEM3X (ORCPT ); Wed, 5 May 2010 08:29:23 -0400 Received: from hera.kernel.org ([140.211.167.34]:52681 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932090Ab0EEM3W (ORCPT ); Wed, 5 May 2010 08:29:22 -0400 Message-ID: <4BE1648B.1080709@kernel.org> Date: Wed, 05 May 2010 14:28:59 +0200 From: Tejun Heo User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.1.9) Gecko/20100317 Thunderbird/3.0.4 MIME-Version: 1.0 To: Peter Zijlstra , mingo@elte.hu CC: efault@gmx.de, avi@redhat.com, paulus@samba.org, acme@redhat.com, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCHSET] sched,perf: unify tracers in sched and move perf on top of TP References: <1272976724-14312-1-git-send-email-tj@kernel.org> <1272994165.1642.203.camel@laptop> <4BE0FB68.7080403@kernel.org> <1273050400.1642.229.camel@laptop> <4BE13B33.3030709@kernel.org> <1273053073.1642.235.camel@laptop> <4BE1406C.2000400@kernel.org> <1273059488.1642.245.camel@laptop> In-Reply-To: <1273059488.1642.245.camel@laptop> X-Enigmail-Version: 1.0.1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Wed, 05 May 2010 12:29:00 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, On 05/05/2010 01:38 PM, Peter Zijlstra wrote: > As it stands I'd argue to simply drop this whole idea. The SCHED_EVENT() > thing doesn't look like its worth the obfuscation and I'm very much > opposed to making perf and sched_notifiers rely on tracepoints. Hmmm... okay. Well, this thing is born out of Ingo's suggestion that for more sched notifiers to be added notification mechanisms need to be consolidated. As long as I can get those two notifiers needed for cmwq, it's okay with me. Ingo, what do you think? Thanks. -- tejun